from flask import g

from info import constants
from info import redis_store
from info.models import User, News, Category
from info.utils.commons import user_login_data
from info.utils.response_code import RET
from . import index_blue
import logging
from flask import current_app,render_template,session,jsonify,request

#获取新闻列表
# 请求路径: /newslist
# 请求方式: GET
# 请求参数: cid,page,per_page
# 返回值: data数据
@index_blue.route('/newslist')
def news_list():
    """
    - 1.获取参数
    - 2.参数类型转换int类型,为分页做准备
    - 3.分页查询
    - 4.获取分页对象身上属性,总页数,当前页,当前页对象列表
    - 5.将对象列表转成字典列表
    - 6.拼接数据,返回响应
    :return:
    """
    # - 1.获取参数
    cid = request.args.get("cid","1")
    page = request.args.get("page","1")
    per_page = request.args.get("per_page","10")

    # - 2.参数类型转换int类型,为分页做准备
    try:
        page = int(page)
        per_page = int(per_page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
        per_page = 10

    # - 3.分页查询
    try:
        # 判断是否分类cid == 1
        query_condition = ""
        if cid != "1":
            query_condition =  News.category_id == cid

        paginate = News.query.filter(query_condition).order_by(News.create_time.desc()).paginate(page,per_page,False)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg="新闻获取失败")

    # - 4.获取分页对象身上属性,总页数,当前页,当前页对象列表
    totalPage = paginate.pages
    currentPage = paginate.page
    items = paginate.items

    # - 5.将对象列表转成字典列表
    newsList = []
    for item in items:
        newsList.append(item.to_dict())

    # - 6.拼接数据,返回响应
    # data = {
    #     "totalPage":totalPage,
    #     "currentPage":currentPage,
    #     "newsList":newsList
    # }
    return jsonify(errno=RET.OK,errmsg="获取成功",totalPage=totalPage,currentPage=currentPage,newsList=newsList)


@index_blue.route('/',methods=["GET","POST"])
@user_login_data
def show_index():

    # # 获取用户登录状态
    # user_id = session.get("user_id")
    #
    # # 获取用户登录数据
    # user = None
    # if user_id:
    #     try:
    #         user = User.query.get(user_id)
    #     except Exception as e:
    #         current_app.logger.error(e)

    # 根据浏览量，查询前十条新闻即可  按照点击量 降序 前十条
    try:
        news = News.query.order_by(News.clicks.desc()).limit(constants.CLICK_RANK_MAX_NEWS).all()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg="新闻查询失败")

    # 将新闻对象列表，转成字典列表
    click_news_list = []
    for new in news:
        click_news_list.append(new.to_dict())

    # 查询所有的分类列表  categories 新闻分类
    try:
        categories = Category.query.all()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="新闻查询失败")

     # 将分类对象列表，转成字典列表
    category_list = []
    for category in categories:
        category_list.append(category.to_dict())


    # 携带用户数据渲染到页面中
    data = {
        # 如果user有值,返回左边内容, 否则返回右边
        "user_info":g.user.to_dict() if g.user else "",
        "click_news_list":click_news_list,
        "category_list":category_list,
    }
    return render_template("news/index.html",data=data)

# 网站logo处理

@index_blue.route("/favicon.ico")
def web_logo():
    return current_app.send_static_file("news/favicon.ico")